CVE-2022-49744 mm/uffd: fix pte marker when fork() without fork event

In the Linux kernel, the following vulnerability has been resolved: mm/uffd: fix pte marker when fork without fork event Patch series "mm: Fixes on pte markers". Patch 1 resolves the syzkiller report from Pengfei. Patch 2 further harden pte markers when used with the recent swapin error markers...

CVE-2022-49744

In the Linux kernel, the following vulnerability has been resolved: mm/uffd: fix pte marker when fork without fork event Patch series "mm: Fixes on pte markers". Patch 1 resolves the syzkiller report from Pengfei. Patch 2 further harden pte markers when used with the recent swapin error markers...

CVE-2022-49744 mm/uffd: fix pte marker when fork() without fork event

In the Linux kernel, the following vulnerability has been resolved: mm/uffd: fix pte marker when fork without fork event Patch series "mm: Fixes on pte markers". Patch 1 resolves the syzkiller report from Pengfei. Patch 2 further harden pte markers when used with the recent swapin error markers...

CVE-2022-49760: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix PTE marker handling in hugetlbchangeprotection Patch series "mm/hugetlb: uffd-wp fixes for hugetlbchangeprotection". Playing with virtio-mem and background snapshots using uffd-wp on hugetlb in QEMU, I managed to...

CVE-2022-49744: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/uffd: fix pte marker when fork without fork event Patch series "mm: Fixes on pte markers". Patch 1 resolves the syzkiller report from Pengfei. Patch 2 further harden pte markers when used with the recent swapin error markers...

PT-2025-14487

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue concerns a NULL-check in the Linux kernel's drm/amdgpu component when determining GFX12 PTE flags. Specifically, PRT BOs may not have any backing store, resulting in a NULL...

Linux Distros Unpatched Vulnerability : CVE-2024-56628

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: LoongArch: Add architecture specific hugepteclear When executing mm selftests runvmtests.sh...

CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

AZL-68690 CVE-2022-49562 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

UBUNTU-CVE-2021-47640

In the Linux kernel, the following vulnerability has been resolved: powerpc/kasan: Fix early region not updated correctly The shadow's page table is not updated when PTERPNSHIFT is 24 and PAGESHIFT is 12. It not only causes false positives but also false negative as shown the following text. Fix ...

UBUNTU-CVE-2021-47632

In the Linux kernel, the following vulnerability has been resolved: powerpc/setmemory: Avoid spinlock recursion in changepageattr Commit 1f9ad21c3b38 "powerpc/mm: Implement setmemory routines" included a spinlock to changepageattr in order to safely perform the three step operations. But then...

CVE-2022-49562

CVE-2022-49562 concerns the Linux kernel KVM/x86 path, where guest PTE A/D bits were updated using a risky mapping approach. The fix switches to __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel space, and highlights VM_PFNMAP addressing being conceptually w...

CVE-2022-49562 KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

CVE-2022-49562 KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

CVE-2022-49562: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

DEBIAN-CVE-2025-21696

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap When mremaping a memory region previously registered with userfaultfd as write-protected but without UFFDFEATUREEVENTREMAP, an inconsistency in flag clearing leads to a mismatch between t...

UBUNTU-CVE-2025-21696

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap When mremaping a memory region previously registered with userfaultfd as write-protected but without UFFDFEATUREEVENTREMAP, an inconsistency in flag clearing leads to a mismatch between t...

CVE-2025-21696 mm: clear uffd-wp PTE/PMD state on mremap()

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap When mremaping a memory region previously registered with userfaultfd as write-protected but without UFFDFEATUREEVENTREMAP, an inconsistency in flag clearing leads to a mismatch between t...

CVE-2025-21696

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap When mremaping a memory region previously registered with userfaultfd as write-protected but without UFFDFEATUREEVENTREMAP, an inconsistency in flag clearing leads to a mismatch between t...